From 8e33f63040db4f8326c1bf678645a42ab79c32f3 Mon Sep 17 00:00:00 2001
From: Tony Mak <tonymak@google.com>
Date: Fri, 19 Jun 2015 17:52:49 +0100
Subject: [PATCH] Clear granted permission when app is uninstalled by one of
 the multiple users

Bug: 21838358

Change-Id: Iccd46382c9468d0503da0bb49a49040ae712e2cc
---
 .../server/pm/PackageManagerService.java      | 28 ++++++++++++++++++-
 1 file changed, 27 insertions(+), 1 deletion(-)

diff --git a/services/core/java/com/android/server/pm/PackageManagerService.java b/services/core/java/com/android/server/pm/PackageManagerService.java
index 709ae54abbc6e..e7fddb96249ea 100644
--- a/services/core/java/com/android/server/pm/PackageManagerService.java
+++ b/services/core/java/com/android/server/pm/PackageManagerService.java
@@ -12500,6 +12500,8 @@ public class PackageManagerService extends IPackageManager.Stub {
                 if (clearPackagePreferredActivitiesLPw(packageName, removeUser)) {
                     scheduleWritePackageRestrictionsLocked(removeUser);
                 }
+                revokeRuntimePermissionsAndClearAllFlagsLocked(ps.getPermissionsState(),
+                        removeUser);
             }
             return true;
         }
@@ -12706,13 +12708,37 @@ public class PackageManagerService extends IPackageManager.Stub {
                 | PackageManager.FLAG_PERMISSION_USER_FIXED
                 | PackageManager.FLAG_PERMISSION_REVOKE_ON_UPGRADE;
 
+        revokeRuntimePermissionsAndClearFlagsLocked(permissionsState, userId, userSetFlags);
+    }
+
+    /**
+     * Revokes granted runtime permissions and clears all flags.
+     *
+     * @param permissionsState The permission state to reset.
+     * @param userId The device user for which to do a reset.
+     */
+    private void revokeRuntimePermissionsAndClearAllFlagsLocked(
+            PermissionsState permissionsState, int userId) {
+        revokeRuntimePermissionsAndClearFlagsLocked(permissionsState, userId,
+                PackageManager.MASK_PERMISSION_FLAGS);
+    }
+
+    /**
+     * Revokes granted runtime permissions and clears certain flags.
+     *
+     * @param permissionsState The permission state to reset.
+     * @param userId The device user for which to do a reset.
+     * @param flags The flags that is going to be reset.
+     */
+    private void revokeRuntimePermissionsAndClearFlagsLocked(
+            PermissionsState permissionsState, int userId, int flags) {
         boolean needsWrite = false;
 
         for (PermissionState state : permissionsState.getRuntimePermissionStates(userId)) {
             BasePermission bp = mSettings.mPermissions.get(state.getName());
             if (bp != null) {
                 permissionsState.revokeRuntimePermission(bp, userId);
-                permissionsState.updatePermissionFlags(bp, userId, userSetFlags, 0);
+                permissionsState.updatePermissionFlags(bp, userId, flags, 0);
                 needsWrite = true;
             }
         }